Native bounded uncertainty: corrected reference qualified

All 24 native interface controls pass. Both input formats, all three candidates, both processing assumptions and both gravity cases agree with the independent dense calculation at the unchanged tolerance. Every case retains all 26/27 calibration columns and a parameter at its bound. Missing nonlinear error allowances remain unsupported.

Only the dense reference whitening solver changed. Exact rational arithmetic had identified its general LU solve as unstable on the mixed-unit triangular factor. The native and structured algorithms, physical models, calibration limits, generated inputs and acceptance thresholds remain unchanged. The original 22/24 failed gate and its two-case diagnosis are preserved.

This qualifies the native interface for the supplied linear-error problem. It does not establish nonlinear approximation bounds, calibrated coverage on aircraft data, an instrument calibration or another Earth-model result. No fitting or original/protected data reads occur.

Corrected-reference plan · Numerical diagnosis · Original failure · Next analyses.